<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>jsScreenShots</title>
  </head>
  <body>
    <h1>qwsnqwascascascascascas</h1>
    <h2>q</h2>
    <h3>sdsdsv</h3>
    <h4>qwqwqwascacascas</h4>
    <h1>qwsnqwascascas</h1>
    <h2>q</h2>
    <h3>sdsdsv</h3>
    <h4>qwqwqw</h4>
  </body>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/jcanvas/16.7.3/jcanvas.min.js"></script>
<script src="https://cdn.bootcss.com/html2canvas/0.5.0-beta4/html2canvas.min.js"></script>
<script src="./screenShot.js"></script>
<script type="text/javascript">
  screenShot([16, 65], 27) // 开始快捷键设置为shift+a；退出键为ESC
</script>
</html>
